消化道间质瘤的影像学分析

目的探讨消化道间质瘤(GIST)的临床影像学特点。方法对21例病理证实的消化道间叶源性肿瘤的X线钡剂造影及CT影像表现及鉴别诊断进行回顾性分析。结果21例消化道间质瘤中发生于食管1例,胃15例,小肠3例及结肠2例。X线钡剂造影:6例显示黏膜变平、撑开或移位,8例表现为充盈缺损,2例显示为外压性改变。CT检查:腔内外生长之肿块密度均匀者12例,内见液化坏死区6例,肿瘤内钙化者2例。增强扫描肿块均有显著强化,17例肿瘤不均匀强化或外围性强化,3例较均匀强化。结论消化道间叶源性肿瘤中以GIST最常见,CT检查在术前诊断中有重要价值。

Imaging Evaluation of Gastrointestinal Stromal Tumor

Objective To analyze the imaging features of gastrointestinal stromal tumor(GIST).Methods Imaging features and differential diagnosis of GIST proved surgically and pathologically in 21 cases were studied retrospectively.Results The lesions occurred in esophagus in 1,stomach in 15,small intestine in 3 and colon in 2.The findings of barium meal examination included flattened or shifed mucosal folds(6/21),filling defect(8/21) and extralumially oppressed sign(2/21).CT showed extralumial or intraluminal mass with homogeneous density in 12 cases,liquid-dense necrosis in 6 cases and calcification within tumor in 2 cases.Remarkable enhancement was noted in all tumors,heterogeneous and homogeneous enhancement were showed in 17 and 3 cases respectively.Conclusion GIST is one of the most common gastrointestinal mesenchymal tumors.CT is an effective and useful modality in the diagnosis of GIST.